You're not wrong. Shit like this poses major ethical issues with the Hippocratic oath, and I draw a hard line at kids taking any hormone altering shit. We don't let kids choose their dinner, yet somehow choosing their gender is just fine. Kids make a lot of really dumb decisions - I wouldn't want a former emo kid fucked up for life just because they posted some cringe shit on myspace in 2006.
The ultimate blackpill on this issue is that there really isn't much that can be done about it right now. Anyone who raises an alarm is shouted down as a bigot and a transphobe. The lawsuits that will more than likely come in 10-20 years will hopefully put an end to this kind of thing being done to children, but not before a whole host of human guinea pigs become 21st century David Reimers in the name of progress.